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G W. BM N A DE EB RT M m H No. 456,299. Patented July 21, 1891.

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- UNITED STATES PATENT OFFICE.

EDUARD ACHILLES BREDENBERG, OF SUNDSVALL, SWEDEN.

SHAFT-BEARING.

SPECIFICATION forming part of Letters Patent No. 456,299, dated July 211891.

Application filed February '7, 1891. Serial No. 380,685- (N 0 model.)

To all whom it may concern.-

Be it known that I, EDUARD ACHILLES BREDENBERG, a subject of the King ofSweden, residing at Sundsvall, Sweden, have invented certainImprovements in Shaft-Bearings, of which the following is aspecification.

My invention relates to improvements in ball-bearings such as areemployed for rotating shafts; and the object of myinvention is toprovide a bearing of this general character which shall be of a simpleand inexpensive construction, and wherein provision is made for certainirregularities in movementsuch as the lifting or bending of the rotatingshaft without imparting undue strain to the bearing-brackets.

My invention also contemplates means for taking up looseness resultingfrom wear, so that the bearing may be used for a considerable timewithout the necessity of replacing the bearing blocks and surfaces.

In the accompanying drawings, which serve to illustrate my invention,Figure 1 is a side view of a shaft-bearing constructed according to myinvention; and Fig. 2 is an end view of the same, looking in thedirection indicated by arrow 2 in Fig. 1. Fig. 3 is a horizontallongitudinal section of the bearing, taken in the plane indicated by thelineA B in Fig. 1, the bearing being represented as applied to ahorizontal shaft or vehicle-axle, which latter is in elevation. Fig. &is a view of the central bearing-block, taken along line C D in Fig. 1,looking in the same direction as in Fig. 2, the end collar being removedto show the metallic balls or spheres.

In the views, E represents the rotating shaft, and O is the main bearingblock or hanger, which is secured to the ceiling or other fixed part inthe case of a shaft for machinery or to the wagon-bed in the case of avehicle-axle by means of bolts passing through its base 0. This block isbored at its center for the passage of the shaft E, and is hollowed outon its opposite faces about the edges of the shaft-opening, and thesehollows are countersunk to a sufficient depth to each receive a layer ofrubber or other elastic packing d, and in contact with this packingthere are circular plates b h, each of which is grooved on its outersurface to provide a path for the balls to move in as the shaft turns.On the shaft E is shrunk a stout ring or band E, which rotatestherewith, and this band is provided with three or more equally-spacedadjusting-screws e, which hear at their oppo site ends against abearing-collar a, which is slipped upon 'the shaft and fits thereaboutquite snugly by preference. side of the block 0 a collar a, similar tocollar a, is slipped about the shaft, and, like the latter, fits quitesnugly about the shaft. In the inner faces of these collars a and a areformed annular grooves, corresponding in size and depth to the groovesin the plates 12 b. These grooves conform in cross-section to the On theopposite cross-section of the balls e, but are preferably opposite sideof the block is now introduced into the countersunk hollow on theopposite face of block 0, and the collar a for that side of the bearingis slipped about the shaft. and up to said plate, the balls being inplace, and is set in this position by means of set-screws a which passthrough it and abut against the shaft E.

In the drawings I have represented the ring or collar a as provided withthree screws (1 equally spaced; but any number may of course beemployed. Thus it will be seen that the shaft E is supported out ofcontact with any bearing-surface whatever, and consequently there willbe no wear at any point but atthe grooves, in which the balls 6 roll. Inorder to compensate for all movements of the shaft E other than itsrotatory movement in the hearing, which movements would tend to strainthe bearing-block C unduly, I prefer to round the outer edges ofplates 1) 1). Thus it will be seen that any such movement of shaft Ewill be compensated for by the tilting of plates 1) I), together withthose parts of the bearing which are secured fixedly on shaft E, therounded edges and packing-rings cl, together with the space betweenshaft E and bearing-bracket 0, allowing by the difference in theirdiameters said plates to turn slightly in. their recesses in the sidesof block 0. This construction will also compensate for any difierencewhich may exist between the diameters of the balls 6. In the course oftime the balls will wear somewhat in their grooves and work loose; butthis looseness may be taken up from time to time by means of the screws6'. A turn upon each of these screws will press the plates a and I)together, and thereby take up any looseness.

My hearing has great advantages over ballbearings as heretoforeconstructed, in that it is very simple and inexpensive in constructionand eifectually decreases the wear of the shaft in its bearings, andthat it provides means for taking up looseness from time to time.

here the bearing is to be used for a vertical shaft, it will be readilyseen that the lower plates 1) a, with their balls 6, may be dispensedwith, as may likewise the adjusting' means-that is, the ring E andscrews ethe collar (0 being shrunk directly on the shaft E.

Having thus described my invention, I claim In a ball-bearing forshafts, the combination, with the shaft E, of the bearing-block C,recessed on its opposite faces about the opening for shaft E, thepacking-rings ar ranged in said recesses, and the grooved bearing-platesb 1), arranged in said recesses above said packing-rings, the groovedcollars a a, set on saidshaft on opposite sides of said block 0, and theballs e, arranged in the grooves in the bearing surfaces and collars,said grooves coinciding'when the parts are assembled, the said plates bb being rounded at their outer edges where they bear against the block0, whereby any movement of shaft E other than its rotatory movement iscompensated for, substantially as set forth.

In witness whereof I have hereunto signed my name in the presence of twosubscribing witnesses.

EDUAllD ACIIILLES llREDENllEltG.

\Vitnesses:

LABS RoMELL, M. SrEN UIs'r.

